Bass Lock - Max For Live MIDI Effect

This device isolates a midi bass note from multiple note of your choosing (Lowest Note, Highest Note, and Last Played) and transposing it to the sub octave.

In the Live 12 version you can lock the output to specific scales, and you can use the Scale Aware button to automatically output notes in the scale that your project is set to.

The Live 12 version also has a "Root" output mode which can detect chords being played and prioritize outputting the root note

Disclaimer: This device is in beta right now, it works best when placed before a monophonic synth, otherwise it may play more than one bass note at a time.